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Transverse waves travel at 20.8 m/s on a string that is under a tension of 7.00 N. What tension is required for a wave speed of 30.8 m/s in the string?
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A converging lens with a diameter of 30.0 cm forms an image of a satellite passing overhead. what is the altitude of the satellite
The rotor of a toy gyroscope consists of an annular cylinder attached to cylindrical shafts by spokes. The rotor is spun by pulling on a string wrapped around shaft.
After having collected samples along the shore all day long, a marine biologist walks back to her campsite, 1.69 km away. Her dog runs ahead, at twice the speed, reaches the campground and turns around until it meets her again. Then, the dog proce..
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 5.25 km on the moon some 384000 km away
Light from a star has an intensity of about 57×10-8W/m2. how far away is it from Earth
A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.89 × 102 kW, calculate the corresponding sound intensity level
An Argon ion laser has a gain bandwidth of 2 GHz. Find the number of standing wave cavity modes within the gain bandwidth of the argon ion laser
A 2.00 syringe has an inner diameter of 5.00, a needle inner diameter of 0.270, and a plunger pad diameter (where you place your finger) of 1.20. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Suppose the ..
In a closed but uninsulated container, 500g of water is shaken until it's temperature increases by 3 degrees Celsius. How much heat is transferred to the environment during the process
An electron is placed in a uniform electric field of strength 210 N/C. If the electron is at rest at the origin of a coordinate system at t = 0 and the electric field is in the positive x-direction
A flight attendant pulls her 70.0N flight bag a distance of 244 m along a level airport floor at a constant speed. The force she exerts is 36N at an angle of 52° above the horizontal. Find the work she does on the flight bag.
A street light is supported by two wires and each makes a different angle from each other. Find the tension in each wire if the street light has a mass of 60.0 kg
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